relatively, modern methods of testing pool and spa water. Typically, able to do a variety of tests including: Free Chlorine, Total Chlorine, Bromine, pH, Total Alkalinity, Calcium Hardness, Chlorine Stabilizer, etc. Not all strips do all tests. A convenient, no chemicals way to test water. Click here for some ordering information.
Small plastic strips with pads attached that have been impregnated with reagents that can be used to test pool water for residuals, levels, constituents or demands. The strips are usually dipped in the water and the resulting colors of the pads compared to a standard set of colors to determine concentration.